package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.Constant;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService imagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional  // 事务注解
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        // 1. 保存spu基本信息  pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());

        this.saveBaseSpuInfo(infoEntity);

        // 2. 保存Spu的描述图片  pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity spuInfoDescEntity = new SpuInfoDescEntity();
        spuInfoDescEntity.setSpuId(infoEntity.getId());
        spuInfoDescEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(spuInfoDescEntity);

        // 3. 保存spu的图片集  pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(), images);

        // 4. 保存Spu的规格参数: pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(attr.getAttrId());
            AttrEntity id = attrService.getById(attr.getAttrId());
            productAttrValueEntity.setAttrName(id.getAttrName());
            productAttrValueEntity.setAttrValue(attr.getAttrValues());
            productAttrValueEntity.setQuickShow(attr.getShowDesc());
            productAttrValueEntity.setSpuId(infoEntity.getId());

            return productAttrValueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);

        // 5. 保存spu的积分信息: gulimall_sms -> sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }

        // 6. 保存当前spu对应的sku信息
        // 6.1) sku的基本信息: pms_sku_info
        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0) {
            skus.forEach(item->{
                /*
                    private String skuName;
                    private BigDecimal price;
                    private String skuTitle;
                    private String skuSubtitle;
                 */

                String defaultImg = "";

                for (Images image: item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());

                // 6.2) sku的图片信息: pms_sku_images
                // TODO 没有路径的不需要保存
                skuImagesService.saveBatch(imagesEntities);

                // 6.3) sku的销售属性信息: pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);

                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // 6.4) sku的优惠信息: gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                // TODO 调用远程服务
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);

                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存spu优惠信息失败");
                    }
                }
            });


        }



    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
//        log.warn("进来了");
        QueryWrapper<SpuInfoEntity> spuInfoEntityQueryWrapper = new QueryWrapper<>();

        /**
         * {
         *    key: '华为',//检索关键字
         *    catelogId: 6,//三级分类id
         *    brandId: 1,//品牌id
         *    status: 0,//商品状态
         * }
         */

        String key = (String) params.get("key");
//        log.debug(key);
        if (!StringUtils.isEmpty(key)) {
            spuInfoEntityQueryWrapper.and(w->{
                // 这里有or, 不能直接拼
                w.eq("id", key).or().like("spu_name", key);
            });
        }

        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)) {
            spuInfoEntityQueryWrapper.eq("publish_status", status);
        }

        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            spuInfoEntityQueryWrapper.eq("brand_id", brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            spuInfoEntityQueryWrapper.eq("catelog_id", catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                spuInfoEntityQueryWrapper
        );

//        System.out.println(spuInfoEntityQueryWrapper.toString());

        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void spuUp(Long spuId) {

        List<SkuEsModel> uoProducts = new ArrayList<SkuEsModel>();

        // 1. 查出当前spuid对应的所有sku信息,品牌的名字等等
        List<SkuInfoEntity> skuInfoEntities = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skuInfoEntities.stream().map(item -> {
            return item.getSkuId();
        }).collect(Collectors.toList());

        // TODO 4. 查询当前sku的所有可以用来检索的规格属性,
        List<ProductAttrValueEntity> attrEntities = productAttrValueService.baseAttrListForSpu(spuId);
        List<Long> attrIds = attrEntities.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);
        Set<Long> idSet = new HashSet<Long>(searchAttrIds);
        List<SkuEsModel.Attrs> attrsList = attrEntities.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs1);
            return attrs1;
        }).collect(Collectors.toList());

        //TODO 1、发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try{
            R r = wareFeignService.getSkusHasStock(skuIdList);
            //
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常:原因{}",e);
        }

        Map<Long, Boolean> finalStockMap = stockMap;
        // 2. 封装每个sku的信息
        List<SkuEsModel> esModel = skuInfoEntities.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel es = new SkuEsModel();
            BeanUtils.copyProperties(sku, es);

            // skuPrice, skuImg, hasStock, hotScore, brandName, brandImg, catelogName,
            es.setSkuPrice(sku.getPrice());
            es.setSkuImg(sku.getSkuDefaultImg());

            // hasStock, hotScore
            // 设置库存信息
            if (finalStockMap == null) {
                es.setHasStock(true);
            }
            es.setHasStock(finalStockMap.get(sku.getSkuId()));

            // TODO 2. 热度评分. 0
            // TODO 3. 查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(es.getBrandId());
            es.setBrandName(brand.getName());
            es.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(es.getCatalogId());
            es.setCatalogName(category.getName());

            // 热度评分先写0
            es.setHotScore(0L);

            // 设置检索属性List<Attrs> attrs
            es.setAttrs(attrsList);

            return es;
        }).collect(Collectors.toList());

        // TODO 5. 将数据发送给es进行保存: gulimall-search:
        R r = searchFeignService.productStatusUp(esModel);
        if (r.getCode() == 0) {
            // 远程调用成功
            // TODO 6. 修改当前spu的状态
            // UPDATE `pms_spu_info` SET publish_status=?,update_time=NOW() WHERE id=?
            this.baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            // 远程调用失败
            //  TODO 7. 重复调用性, 接口幂等性: 重试机制?xxx
            /**
             * Feign调用流程
             * 1. 构造请求数据
             *      RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2. 发送发送请求进行执行(执行成功会解码响应数据)
             *      executeAndDecode(template)
             * 3. 执行请求会有重试机制:
             *      while (true) {
             *          try {
             *              executeAndDecode(template);
             *          } catch () {
             *              try{
             *                  retryer.continueOrPropagate(e);
             *              } catch (ex) {
             *                  throw ex;
             *              }
             *              continue;
             *          }
             */
        }
    }

    /**
     * 根据skuId查询spu的信息
     * @param skuId
     * @return
     */
    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {

        //先查询sku表里的数据
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);

        //获得spuId
        Long spuId = skuInfoEntity.getSpuId();

        //再通过spuId查询spuInfo信息表里的数据
        SpuInfoEntity spuInfoEntity = baseMapper.selectById(spuId);

        //查询品牌表的数据获取品牌名
        BrandEntity brandEntity = brandService.getById(spuInfoEntity.getBrandId());
        spuInfoEntity.setBrandName(brandEntity.getName());

        return spuInfoEntity;
    }
}